Machine for making pipes and conduits.



W. R. HUME.

MACHINE FOR MAKING PIPES AND CONQUITS.

APPL ICATIDI FILED JAN. 13. I914.

Patented July 3, 1917;

PAT NT OFFICE warren amnuim nun, or ADELAIDE, scum aosrnama, aus'rnama.

nacnnm Ion maniac PIPES am) GONDUITS.

Britain, residing at Flinders street, Ade-' laide, in the State of SouthAustralia, Commonwealth of Australia, have invented certain new anduseful Improvements i'nMachines for Making Pipes and Conduits, of whichthe following is a specification.

My invention relates tomachines for making pipes and conduits, and hasfor its primary object to provide an improved construction, combination,and arrangement of parts in a machine of this character by means ofwhich ,a pipe orconduit may be provided witha cylindrical reinforcementconstructed of wire and having suflicient rigidity to retain itscylindrical form so as not to collapse or sag under ordinary work- Oneof the obf cts of the present invention .is to provide an im rovedmachine which can be simply and urably constructed, which will beeflicient in o eration, and the product of which wil be' inexpensive andserviceable. 'Another object is to provide amachine of improvedconstruction whereby a cylindrical reinforcement of this character canbecon-- structed of various strands of wire su rimposed upon each otherwithout inter acing.

Other and further objects will appear in the specification and pointedout in the a pended claims, referencebeing had to t e accompanyingdrawings which exemplify .-my invention n a preferred embodiment,

v and .in which,

'drum end of machine;

Figure 1 is a side elevation of the machine;

Fig, 2,.a' plafiview of the same;

3,- an. and elevation of the'winding Fig, 4, an endclevation of thegear, wheel end of machine;-

Fig. 5', a sectional view' of a portion of the small drum forwindingrein small pipes;

reference are used to denote similar or corres onding parts wherevertheyoccur. 1n Fig.1 of the draw' "and n the subsequent figures, :1 is aoundation frame Specification of Letters Iatent.

orcemefit for Fig. 6, a spring pin device for thedrumr Patented July 3,1917 Application Med January 18,1914. Serial Ho. B1l,870.

preferably made of stron rolled iron joists.

and suitably bedded. pon this foundation frame two fixed gear standards2 anrl3 are securely bolted. -These gear standards support the maindrivin shaft 4, the end of which projects beyon the standard 2 to formthe drum spindle 5.

Upon the main driving shaft the main ar wheel 6 is securely keyed orotherwise astened, and at the outer end of the shaft the'interchangeablespeed wheels 7, 8 and 9, 10 are arranged, the lastnamed wheels beingmounted on an auxiliaryv shaft 11 placed immediately below and inalineinent with the main driving shaft upon' which said auxiliary shafta-chain wheel 12 is mounted. The two bottom wheels 9 and 10 and thechain wheel 12 rotate in unison, but the wheels 7 and 8 onthe main shaftdepend upon a sliding key 13 for their rotation, the key being embeddedin the main shaft and" being capable of engagement with either of thewheels 7 or 8 by the operation of the hinged lever 14 whichis'fittedwith a controlling handle 15.

Belt wheels are Shown at 16 and are se cured to the belt shaft 17, inconnection with which a clutch gear 18 is arranged, the

.sliding portion of the clutch having .a

feather placed at 19 and a clutch handle or starting lever. 20 connectedtherewith. The

belt shaft is mounted upon frame brackets 21 which are cast upon thegear standards .held in position by the toggle lever 25. The

hinged standard is pivoted to the main frame at 26. V a r Thecylindrical windingdrum is shown at c be understood more'particularlyonreference to28 in Fig. 3 of the drawings wherein. an open space is shownbetween the adjacent free edges, and is also illustrated in 1.

The drum, which is of sheet, meta is mounted upon spri springs being tocollapse inward; but to 100 V 0 27, but is not a complete-cylinder,inasmuch \r a as its edges do not entirely meet. This will ringsQQL-Iwhich are provided at each en the tendency ofthe these springs thearm brackets 30 are fastened and take an adjustable bearing upon thecones previously referred to, and by which means the springs may beextended to suit the desired diameter of the drum according to thepressure exerted by the cones,

as will be well understood.

A- series of holes are circun ferentially drilled through the ends ofthe drum, and through these holes the small pins 31 project. These pinsare mounted upon the ends the intermediate guide wheels 38 also passesaround the tension wheel 39. The slack of the chain may be adjusted byany simple form of tension gear, such as a screw and nut 40 or otherconvenient device.

Upon the frame of the machine I mount a traveling carriage 41 which isguided by the horizontal wheels 42 which are grooved to engage the upperflange of the foundation frame joists. v This frame is fitted with twochain wheels 43, and with a cbntrolling lever 44 which operates anysimple form of clutch such as a. double wedge-shaped bar placed abovethe endless chain in such a position asto render it capable of engagingeither run of the chain which travels above the wheels 43 in theopposite directions indicated by the adjacent arrows, (and capable alsoof disengagii'ig with both) so as to traverse the carriage eitherbackward or forward in accordaiufc with the relative movements of thechain, or to allow it to remain stationary when disengaged, as will bewell understood.

Upon the carriage l mount a grooved wheel 45 which serves as aguideforthe wire.reinforcement which is to be wound around the drum. The' wirereinforcement is illustrated in Fig. 7, the sequence of winding being asfollows A strand of wire from any suitable feed su 'iply is passed underthe guide wheel 45,

' and is fastened to one of the pins.31 upon the drum, the guide wheelhaving been placed opposite to one end of-the drum. By operating thestarting lever 20 the machine is put in motion so that the drumcommences to rotate. and simultaneously by means of the controllinglever 44 the car riage 41 is'causedto traverse along thefounar da-tionframe, being operated by the endless chain 37. By this means twowindingsof the wire are effected, that is to say, a single winding is made equalto the length of the drum and then by means of-the lever 44 the carriageis actuated from the chain run nin in the opposite direction, and areturn .is tiereby obtained.

For pipes of from four to five inches and up to twelve inches indiameter a spiral winding of about six inches pitch is used, asindicated at 4t) in Fig. 7, the pitch in"- creasing as the diameterincreases. After this has been done longitudinal or brace loops, asindicated at 47, are carried under and over the prcviiwsly mentionedwinding.

The longitudinal brace loops, of which there may be foile in number, canbest be applied by hand, and for this purpose a length ofwire is takenand looped over one -of the pins at the center of the wire; the

two ends are then bent under the drum, crossed at the middle, an? fromthence brought upward and on to he corresponding pin at the opposite endof "the drum. After this operation I lay longitudinal straight wiresfrom end to end of the reinforcement. These wires are indicated at 48 inFig. 7 and are g'gpplied by attaching the end of a piece'of "Wire to oneof the pins, then bringing it horizontally to and around thecorresponding pin on the opposite end ofthe drum, and returning it inthe reverse direction after having coiled it at rightangles one-eighthof a circle, that is to say,

around the next pin on the same end. This backward and forward settingof the wire is continued until the whole circumferc tial of the drum hasbeen covered by a length of wire longitudinally placed from pin to pin.

For pipes which require to be specially constructed for strength, I.provide a sup plelnental series of wires as shown at 49. In spacingthese supplemental wires a length of wire is attached to an end pin,and. is stretched above the previously placed wires not quite in ahorizontal line but slightly at anangle so as to pass around the nextopposite pin in succession at the opposite end of the drum, and thenback to the start-- ing end, but missing the next pin in succession asillustrated.

The final winding is achieved by means of the machine,'and is either asingle or return winding of close pitch as indicated at 50, and'bysubstantially the same operation of the machine. as is described withregard to the first winding. These coils are preferably of about oneinch pitch.

The variation in the winding pitch of the wires 46 and 50"-is obtainedby a variation of thegspced traverse of the traveling carriage 41. whichcan be easily effected by moving the sliding key '13 by aid of thehinged lever 14 and the controlling handle 15 so as to make the toothedwheel .7 a driver while the wheel 8 becomes an idler, or alternativelyto cause the wheel 8 to become a driver while the'whecl 7 runs free asan idler, thereby decreasing or increasing the speed of the wheels 9 and10 'as may be requisite to afi'drd decreased or increased chain iscontinuously in motion, and is.

therefore always accessible for operating the traveling carriage 41either backward or for varying the relative forward according to theposition of the controlling lev'eri 44', which when laced in middleposition doesnot enga e t e chain, and therefore leaves the trave ingcarriage free. v a

It is to be understood that if the inter-' mediate wires 47, 48 and 49are placed in position by hand, the first winding of the wire 46 and thefinal winding 50 may be regarded as a continuous or unbroken process,and as the first and last windings embrace the intermediate wiresbetween the internal and external coils there is no necessity for theseparate interlacing of the wires, which are contained between the firstand last windings. This forms an important feature of the reinforcement.

All free ends of the intermediatewires are clipped off or turned. inwardso as notto protrude, and the end of the'final winding is secured by anyconvenient method,,and is then clipped off; After this has been"donethetoggle lever-is made to release the standard 24,-. The slidingcone.23 is withdrawn, and the drum is released.

The removal of the pressure of the cones against the arm brackets 30enables .the' spring Wheels 29 to slightly collapse, the drum,,therebyrelieving the pressure of the coils of the reinforcement. Then this hasbeen done the pin springs 32 are depressed so as'to carry the smallprojecting .pin be low the surface of the drum, thereby re leasing thevarious wires connected therewith and allowing them and the whole ofthe. reinforcement to be removed fromthe winding drum without hindrance-or obstruction. The constructional detail shown in Fig. 5 is for drumsof small diameter, in which case the pins. are made to operate as bentspringsthrough. holes .-or openings in the cones, thesprmg pins beingfastened to a sliding collar '34 which is operated by the sliding pushrod 35, whereby the pins are depressed to the'p'osition indicated by thedotted-line.

1. In a machine for manufacturing pipes and conduits, a main drivingshaft, an auxiliary driving shaft driven thereby, means speeds of said?"shafts, a carriage movable a ong said machine, 'a flexible memberoperated by said auxiliary driving shaft and movable length-- wise alongsa'idniachine, and means for successively connecting said carriage tosaid member and disconnectingit therefrom.

2. In a machine for manufacturing pipes and conduits, a driving shaft,an endless chain or belt connected with said driving shaft andcomprising oppositely moving runs, a carriage reciprocable on said ma-'china, and means for separately connecting said carria e to said runs oftheeudless chain or be t. i

In a machine for manufacturing pipes and conduits, a winding drumconsisting of a continuous plate of sheet metal having a narrow spacebetween its abutting edges, a spring ring for supporting the drum, fixedandsliding cones arranged upon a rotatably mounted shaft, and meansinterposed between said cones and the drum for slightly expanding orincreasing the diameter of said drum.

4. In a-machine for manufacturing pipes and conduits, an expandible drumfor winding reinforcement, a hinged standard for supporting the freeendof the drum spindle, and a hinged or to le lever for forcing andsuppprting such st ndard in a vertical position and for operatingagainst a sliding cone,

substantially as described andas illustrated. 5. In a machine formanufacturing pipes and conduits, the combination with a rotary drum, ofa series of radially projecting pins yieldably mounted to normallyprotrude be yond the peripheral surface of the drunf or the attachmentof reinforcing wires, Y a.

wire directing carriage reciprocable longitudinally of sald drum.

G. In a machine for manufacturing pipes and conduits, a rotary drum, acone or cast ing arranged at the end of said-drum, a series ofdiagonally projecting pins arranged to operate within inclined openingsin said cone or casting, and means for reciprocating said pins to extendand retract them with respect to the peripheral surface of said drum.

7. In a machine for manufacturingpipes and conduits,,'a drum, drivingmechanism for imparting motion to the drum, said mechanismcom'prising amain driving shaft having interchangeable speed wheels mountdo i edthereon, an auxiliary shaft in parallel alinement therewith havinginterchangeable speed wheels thereon, a belt shaft geared to ing and.stopping the machine. a

, 8. In a machine for manufacturing pipes and condpits, a maindrivingshaft, an aux iliary drlving shaft gearedthereto, means the mainshaft, and a clutch gear for start- 'ufof for varying the relativespeeds of said wheel and hating oppositely moving runs to reverse itsdirection of movement 9. he machine for manufacturing pipes shafts, achain wheel mounted upon the auxihary shaft, 0. chain passing about saidchain 5 and conduits, the combination of a series of chain wheels and anendless chain operated from the main shaft by intermediate gearing,which said chain is arranged to traverse horizontally underneath thewinding drum, and an ordinary adjustment nut and bolt for adjusting thetension of such chain.

10. In a machine for ll'lllllllfLlCtlJllllg pipes and eomluits, atraveling chain, a traveling carriage having a wire guide thereon, alever gear, and an engagement clutch whereby the carriage is caused toengage said traveling chain for imparting backward or forward motionfrom the chain to the carriage, said clutch being releasable'forenabling the car- 15 riage to remain stationary.

In testlmony whereof I have alhxed my signature in presenre of twowitnesses.

